I have the following query: where completedate = NULL, is giving the problem it does'nt get the data:Can you please tell me what can use other than NULL. for CompleteDate in where condition.Select actionid, 'ACT' as Type, actiondescription, ModuleName,ModuleRecordID,[days] = CASE WHEN duedate < GetDate()THEN '(' + CONVERT(varchar(20), DATEDIFF(Day, duedate, GetDate()))+ ')'ELSE CONVERT(varchar(20), DATEDIFF(Day, GetDate(), duedate))ENDFROM Tab_CCSNETACTIONS where AssignedTo = 2 and CompleteDate =NULLThank you very much for the information.